Simulcast : A simulcast is when two stations run the same program at the same time in the same city. This was common practice in the early days of FM, when stations tried to save money by running the same material on AM and FM. In an effort to reduce the spectrum waste and promote variety of programming, on October 15, 1965, the FCC made a ruling demanding that at least 50% of all programming on each station be "original." The practice has been revived in recent years as station groups try to use multiple stations to cover some growing markets. WTOP in Washington, DC, for example bought an AM and an FM in the suburbs to carry their signal. (According to some reports, the simulcasts can reach more people than the original station!)